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Description of problem:

Piping ccs --getschema into something, that doesn't wait for the whole output (like /usr/bin/head) results in broken pipe:

[root@virt-102 sbin]# ccs --getschema -h localhost | head -n1
<grammar datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes" xmlns="http://relaxng.org/ns/structure/1.0" xmlns:rha="http://redhat.com/~pkennedy/annotation_namespace/cluster_conf_annot_namespace">
Traceback (most recent call last):
  File "/usr/sbin/ccs", line 2450, in <module>
    main(sys.argv[1:])
  File "/usr/sbin/ccs", line 334, in main
    if (getclusterschema): get_cluster_schema()
  File "/usr/sbin/ccs", line 859, in get_cluster_schema
    print out
IOError: [Errno 32] Broken pipe


Version-Release number of selected component (if applicable):

ccs-0.16.2-69.el6.x86_64
ccs-0.16.2-75.el6.x86_64

How reproducible:
Always


Steps to Reproduce:
1. ccs --getschema -h localhost | head
2.
3.

This is a common problem for most python programs because it doesn't ignore SIGPIPE (like most programs do).

Fix upstream here:
https://github.com/feist/ccs/commit/c3ce0a072f29ac82e7f9aeb54adb198c943fd976

Before Fix:

[root@ask-03 ~]# rpm -q ccs
ccs-0.16.2-75.el6.x86_64
[root@ask-03 ~]# ccs -h localhost --getschema | head -n0
Traceback (most recent call last):
  File "/usr/sbin/ccs", line 2450, in <module>
    main(sys.argv[1:])
  File "/usr/sbin/ccs", line 334, in main
    if (getclusterschema): get_cluster_schema()
  File "/usr/sbin/ccs", line 859, in get_cluster_schema
    print out
IOError: [Errno 32] Broken pipe

After Fix:

[root@ask-02 ~]# rpm -q ccs
ccs-0.16.2-77.el6.x86_64
[root@ask-02 ~]# ccs -h localhost --getschema | head -n0
[root@ask-02 ~]#

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-1405.html